分)




Don’t forget ____ the window before leaving the room.

A)
to have closed

B)
to close

C)
having closed

D)
closing
出自:中国石油大学-《大学英语4》

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块